Are they "meaningless" or aren't they?
I've not said they are "meaningless".... (Which is why I chopped that part of your post out of my reply... It doesn't apply to me!)
It's up to the manager to make tangible use of and draw value from these games if he intends to thrive at the WCs or ECs. The next thing we know we'll hear the ol' complaints about how international managers don't get enough time with their players .... Perhaps you condone them pissing it away when they do have it...?
Should we just dick around until the Euro's bearing in mind here are no more full blown competetive games between now and the start of the tournament?